I need help and opinions...

Okay so I have been best friends with this guy named Kyle for over three years now and I've had a crush on him for that long too. We do everything together because we are so much alike. We are either doing something together or we are texting and we hate not being without the other. Well, the other night I kissed him. He kissed me back and he has kissed me again since then but I didn't feel a spark for any of them. I just told myself that all of the "There's a spark in a kiss" crap wasn't true because if it was I would have felt a spark with him. He is perfect for me and he is all I ever wanted. Well, late last night I was out with two of my other friends, Chris and Justin. I knew Chris first but one night when we hung out he brought along Justin and we have been the three amigos ever since. Well Justin is... well he's Justin. He is perverted and he is hyper and he steals my shoes and makes me walk bare footed in parking lots and he picks me up randomly and messes with me by tickling me But, he can also be very sweet and a gentleman. He holds doors open for me, he rubs my feet, if I'm cold he will give me his jacket, he protects me from walmart creeps, he even went down the toy isle with me lol. Well, I am going to blame what I did on me being half asleep but I kissed him before I left last night. There was a spark. I smiled all the way home and I even laughed out loud because I was so happy. But why would this happen with him and not Kyle who I've known forever and I'm fully comfortable with? The biggest mistake I made was that I told Justin that I liked it. He agreed with me. I also told Kyle what happened. I mostly told him because although we have kissed, we arent dating and I had to ask him if he liked me as more than friends because if he did, i knew I couldn't kiss justin again. It was unfair to Kyle. He said he did have feelings for me but he has never showed them. I know that he doesn't want to date me either. Justin shows that he likes me. He says sweet things to me and for some reason I know that he means it. I want to kiss justin again but I know that I can't because I don't want to hurt Kyle but I'm just not sure anymore... What should I do guys? Go for the guy that I've known for a while or the guy that drives me crazy but makes me so happy? i know that this decision isn't life or death but I really don't know what to do. I'm going to hurt one of them. I can't have both so maybe I should have neither. I've waited 17 years for a guy that I liked to like me back and now I have two at the same time.